<template>
  <div class="login">
    <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">社团联盟系统</h3>
      <el-form-item prop="username">
        <el-input
          v-model="loginForm.username"
          type="text"
          size="large"
          auto-complete="off"
          placeholder="账号"
        >
          <template #prefix><svg-icon icon-class="user" class="el-input__icon input-icon" /></template>
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          v-model="loginForm.password"
          type="password"
          size="large"
          auto-complete="off"
          placeholder="密码"
          @keyup.enter="handleLogin"
        >
          <template #prefix><svg-icon icon-class="password" class="el-input__icon input-icon" /></template>
        </el-input>
      </el-form-item>
      <el-form-item prop="code" v-if="captchaEnabled">
        <el-input
          v-model="loginForm.code"
          size="large"
          auto-complete="off"
          placeholder="验证码"
          style="width: 63%"
          @keyup.enter="handleLogin"
        >
          <template #prefix><svg-icon icon-class="validCode" class="el-input__icon input-icon" /></template>
        </el-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCode" class="login-code-img"/>
        </div>
      </el-form-item>
      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
      <el-form-item style="width:100%;">
        <el-button
          :loading="loading"
          size="large"
          type="primary"
          style="width:100%;"
          @click.prevent="handleLogin"
        >
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
        <div class="login-links">
          <div class="link-left">
            <router-link class="link-type" :to="'/home'">浏览社团</router-link>
          </div>
          <div class="link-right" v-if="register">
            <router-link class="link-type" :to="'/register'">立即注册</router-link>
          </div>
        </div>
      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>Copyright © 2024 社团联盟系统 All Rights Reserved.</span>
    </div>
  </div>
</template>

<script setup>
import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt } from "@/utils/jsencrypt";
import useUserStore from '@/store/modules/user'

const userStore = useUserStore()
const router = useRouter();
const { proxy } = getCurrentInstance();

const loginForm = ref({
  username: "admin",
  password: "admin123",
  rememberMe: false,
  code: "",
  uuid: ""
});

const loginRules = {
  username: [{ required: true, trigger: "blur", message: "请输入您的账号" }],
  password: [{ required: true, trigger: "blur", message: "请输入您的密码" }],
  code: [{ required: true, trigger: "change", message: "请输入验证码" }]
};

const codeUrl = ref("");
const loading = ref(false);
// 验证码开关
const captchaEnabled = ref(true);
// 注册开关
const register = ref(true);
const redirect = ref(undefined);

function handleLogin() {
  proxy.$refs.loginRef.validate(valid => {
    if (valid) {
      loading.value = true;
      // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
      if (loginForm.value.rememberMe) {
        Cookies.set("username", loginForm.value.username, { expires: 30 });
        Cookies.set("password", encrypt(loginForm.value.password), { expires: 30 });
        Cookies.set("rememberMe", loginForm.value.rememberMe, { expires: 30 });
      } else {
        // 否则移除
        Cookies.remove("username");
        Cookies.remove("password");
        Cookies.remove("rememberMe");
      }
      // 调用action的登录方法
      userStore.login(loginForm.value).then(() => {
        router.push({ path: redirect.value || "/index" });
      }).catch(() => {
        loading.value = false;
        // 重新获取验证码
        if (captchaEnabled.value) {
          getCode();
        }
      });
    }
  });
}

function getCode() {
  getCodeImg().then(res => {
    captchaEnabled.value = res.captchaEnabled === undefined ? true : res.captchaEnabled;
    if (captchaEnabled.value) {
      codeUrl.value = "data:image/gif;base64," + res.img;
      loginForm.value.uuid = res.uuid;
    }
  });
}

function getCookie() {
  const username = Cookies.get("username");
  const password = Cookies.get("password");
  const rememberMe = Cookies.get("rememberMe");
  loginForm.value = {
    username: username === undefined ? loginForm.value.username : username,
    password: password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
  };
}

getCode();
getCookie();
</script>

<style lang='scss' scoped>
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  position: relative;
  overflow: hidden;
}

.login::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 100" fill="%23ffffff" opacity="0.05"><polygon points="1000,100 1000,0 0,100"/></svg>');
  background-size: cover;
}

.title {
  margin: 0px auto 40px auto;
  text-align: center;
  color: #2c3e50;
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, #667eea, #764ba2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-form {
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  width: 420px;
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  position: relative;
  z-index: 1;
  
  .el-form-item {
    margin-bottom: 24px;
  }
  
  .el-input {
    height: 48px;
    border-radius: 12px;
    
    input {
      height: 48px;
      border-radius: 12px;
      border: 2px solid #e2e8f0;
      background: #f8fafc;
      transition: all 0.3s ease;
      padding-left: 45px;
      font-size: 16px;
      
      &:focus {
        border-color: #667eea;
        background: white;
        box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
      }
    }
  }
  
  .input-icon {
    height: 48px;
    width: 16px;
    margin-left: 12px;
    color: #64748b;
  }
  
  .el-checkbox {
    color: #64748b;
    font-weight: 500;
    
    .el-checkbox__input.is-checked .el-checkbox__inner {
      background-color: #667eea;
      border-color: #667eea;
    }
  }
  
  .login-links {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 16px;
    padding: 0 4px;
  }
  
  .link-left, .link-right {
    flex: 1;
  }
  
  .link-left {
    text-align: left;
  }
  
  .link-right {
    text-align: right;
  }
  
  .link-type {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: all 0.3s ease;
    
    &:hover {
      color: #764ba2;
      text-decoration: underline;
    }
  }
  
  .el-button {
    height: 48px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border: none;
    transition: all 0.3s ease;
    
    &:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
    }
  }
  
  .link-type {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    
    &:hover {
      color: #764ba2;
      text-decoration: underline;
    }
  }
}

.login-tip {
  font-size: 14px;
  text-align: center;
  color: #64748b;
  margin-top: 20px;
}

.login-code {
  width: 35%;
  height: 48px;
  float: right;
  border-radius: 12px;
  overflow: hidden;
  border: 2px solid #e2e8f0;
  background: #f8fafc;
  
  img {
    cursor: pointer;
    vertical-align: middle;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.3s ease;
    
    &:hover {
      opacity: 0.8;
    }
  }
}

.el-login-footer {
  height: 50px;
  line-height: 50px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: rgba(255, 255, 255, 0.8);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: 14px;
  letter-spacing: 0.5px;
  background: rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
}

.login-code-img {
  height: 48px;
  border-radius: 8px;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .login-form {
    width: 90%;
    max-width: 380px;
    padding: 30px 20px;
  }
  
  .title {
    font-size: 24px;
  }
}
</style>
